package lesson2;

public class Demo3 {
    public static void main(String[] args) {
        fun1();
        fun2();
        fun3();
    }
    static void fun1(){
        System.out.println("fun1()");
        fun2();
    }

    static void fun2(){
        System.out.println("fun2()");
        fun3();
    }

    static void fun3(){
        System.out.println("fun3()");
    }
}
